diff --git a/README.md b/README.md
index 783b560..4e0905b 100644
--- a/README.md
+++ b/README.md
@@ -174,14 +174,14 @@ pnpm pages:deploy
 |--------|-----|
 | Worker API | https://chat-worker.kappa-d8e.workers.dev |
 | Frontend | https://chat-frontend-4wf.pages.dev |
-| Custom Domain | https://chat.anvil.it.com |
+| Custom Domain | https://chat.inouter.com |
 
 ## 보안 구현 상세
 
 ### CORS 설정
 ```typescript
 const ALLOWED_ORIGINS = [
-  'https://chat.anvil.it.com',
+  'https://chat.inouter.com',
   'https://chat-frontend-4wf.pages.dev',
   'http://localhost:5173',
   'http://localhost:3000',